WIIG, Øystein. Demographic Parameters for Norwegian Grey Seals Halichoerus grypus. Fauna norvegica, [S. l.], v. 12, p. 25-28, 1991. DOI: 10.5324/fn.v12i0.6056. Disponível em: https://www.ntnu.no/ojs/index.php/fauna_norvegica/article/view/6056. Acesso em: 25 nov. 2024.